Phase demodulator, symbol timing recovery circuit and the...

Details Phase demodulator, symbol timing recovery circuit and the... Phase demodulator, symbol timing recovery circuit and the...

2006-02-14

2006-02-14

Tran, Khai (Department: 2637)

Pulse or digital communications

Receivers

Angle modulation

Reexamination Certificate

active

06999527

ABSTRACT:
This specification discloses a symbol timing recovery circuit, which includes a transform value generation circuit, a selection circuit, a plurality of accumulators, and a comparison module. Without performing phase difference calculation, the invention is a symbol timing recovery circuit that can directly use digital in-phase signal components and digital quadrature signal components of consecutive two symbols to obtain an optimal sampling point. The invention also provides a phase demodulator with a simple structure.

REFERENCES:
patent: 4941155 (1990-07-01), Chuang et al.
patent: 5276706 (1994-01-01), Critchlow
patent: 6566941 (2003-05-01), Guo
patent: 6597733 (2003-07-01), Pollmann et al.
patent: 6693590 (2004-02-01), Toplicar et al.
patent: 6873666 (2005-03-01), Chen

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